<template>
	<div>
		<!-- 面包屑导航 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片 -->
		<el-card>
			<!-- 提示 -->
			<el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
			<!-- 步骤条 -->
			<el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品图片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>
			<!-- tab栏 -->
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
				<el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforTabLeave" @tab-click="tabClicked">
					<el-tab-pane label="基本信息" name="0">
						<el-form-item label="商品名称" prop="goods_name">
							<el-input v-model="addForm.goods_name"></el-input>
						</el-form-item>
						<el-form-item label="商品价格" prop="goods_price">
							<el-input v-model="addForm.goods_price" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品重量" prop="goods_weight">
							<el-input v-model="addForm.goods_weight" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品数量" prop="goods_number">
							<el-input v-model="addForm.goods_number" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品分类" prop="goods_cat">
							<el-cascader
							expand-trigger="hover"
							    v-model="addForm.goods_cat"
							    :options="cateList"
							    :props="cateProps"
							    @change="handleChange"></el-cascader>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品参数" name="1">
						<el-form-item v-for="item in manyTableData" :key="item.attr_id" :label="item.attr_name">
							<el-checkbox-group v-model="item.attr_vals">
							    <el-checkbox border v-for="(cb,i) in item.attr_vals" :key="i" :label="cb"></el-checkbox>
							  </el-checkbox-group>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品属性" name="2">
						<el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
							<el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品图片" name="3">
						<el-upload
						  action="http://127.0.0.1:8888/api/private/v1/upload"
						  :on-preview="handlePreview"
						  :on-remove="handleRemove"
						  list-type="picture" :headers="headerObj" :on-success="handleSuccess">
						  <el-button size="small" type="primary">点击上传</el-button>
						  <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
						</el-upload>
					</el-tab-pane>
					<el-tab-pane label="商品内容" name="4">
						<quill-editor v-model="addForm.goods_introduce"></quill-editor>
						<el-button type="primary" @click="add">添加商品</el-button>
					</el-tab-pane>
				</el-tabs>
			</el-form>
		</el-card>
		<!-- 图片预览 -->
		<el-dialog
		  title="图片预览"
		  :visible.sync="picDialogVisible"
		  width="50%">
			<img :src="previewPath" class="pic" />
		</el-dialog>
	</div>
</template>

<script>
	import _ from 'loadsh'
	export default {
		data() {
			return {
				activeIndex: '0',
				addForm:{
					goods_name:'',
					goods_price:'',
					goods_weight:'',
					goods_number:'',
					goods_cat:[],
					pics:[],
					goods_introduce:'',
					attrs:[]
				},
				addFormRules:{
					goods_name:[
						{required:true,message:'请输入商品名称',trigger:'blur'}
					],
					goods_price:[
						{required:true,message:'请输入商品价格',trigger:'blur'}
					],
					goods_weight:[
						{required:true,message:'请输入商品重量',trigger:'blur'}
					],
					goods_num:[
						{required:true,message:'请输入商品数量',trigger:'blur'}
					],
					goods_num:[
						{required:true,message:'请选择商品分类',trigger:'blur'}
					]
				},
				cateList:[],
				cateProps:{
					label:'cat_name',
					value:'cat_id',
					children:'children'
				},
				manyTableData:[],
				onlyTableData:[],
				headerObj:{
					Authorization:window.sessionStorage.getItem('token')
				},
				previewPath:'',
				picDialogVisible:false
				
			}
		},
		created(){
			this.getCateList()
		},
		methods:{
			async getCateList(){
				const {data:res}=await this.$http.get('categories')
				if(res.meta.status!==200){
					this.$message.error("获取数据失败")
				}else{
					this.cateList=res.data
					console.log(this.cateList)
				}
			},
			handleChange(){
				if(this.addForm.goods_cat.length!==3){
					this.addForm.goods_cat=[]
				}
			},
			beforTabLeave(activeName,oldActiveName){
				if(oldActiveName=='0' && this.addForm.goods_cat.length!==3){
					this.$message.error("请先选择商品分类")
					return false
				}
			},
			async tabClicked(){
				if(this.activeIndex=='1'){
					const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'many'}})
					if(res.meta.status!==200){
						this.$message.error("获取数据失败")
					}else{
						res.data.forEach(item=>{
							item.attr_vals=item.attr_vals.length ===0?[]:item.attr_vals.split(' ')
						})
						this.manyTableData=res.data
						console.log(this.manyTableData)
					}
				}else if(this.activeIndex=='2'){
					const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'only'}})
					if(res.meta.status!==200){
						this.$message.error("获取数据失败")
					}else{
						this.onlyTableData=res.data
						console.log(this.onlyTableData)
					}
				}
			},
			handlePreview(file){
				this.previewPath=file.response.data.url
				this.picDialogVisible=true
			},
			handleRemove(file){
				const filePath=file.response.data.temp_path
				const i=this.addForm.pics.findIndex(x=>
				x.pic===filePath)
				this.addForm.pics.splice(i,1)
				
			},
			handleSuccess(response){
				const picInfo={pic:response.data.tem_path}
				this.addForm.pics.push(picInfo)
				console.log(this.addForm)
			},
			add(){
				console.log(this.addForm.goods_num)
				this.$refs.addFormRef.validate(async valid=>{
					if(!valid){
						return this.$message.error("请输入必要的信息")
					}else{
						const form =_.cloneDeep(this.addForm)
						form.goods_cat=form.goods_cat.join(',')
						this.manyTableData.forEach(item=>{
							const newInfo={
								attr_id:item.attr_id,
								attr_value:item.attr_vals.join(' ')
							}
							this.addForm.attrs.push(newInfo)
						})
						this.manyTableData.forEach(item=>{
							const newInfo={
								attr_id:item.attr_id,
								attr_value:item.attr_vals
							}
							this.addForm.attrs.push(newInfo)
						})
						form.attrs=this.addForm.attrs
						console.log(form)
						const {data:res}=await this.$http.post('goods',form)
						console.log(res)
						if(res.meta.status!==201){
							this.$message.error("添加商品失败")
						}else{
							this.$message.toSource("添加商品成功")
							this.$router.push('/goods')
						}
					}
					
				})
			}
			
			
		},
		computed:{
			cateId(){
				if(this.addForm.goods_cat.length==3){
					return this.addForm.goods_cat[2]
				}
				return null
			}
		}
	}
</script>

<style>
	.pic{
		width: 100%;
	}
	.quill-editor{
		min-height: 300px;
		margin-bottom: 15px;
	}
</style>
